Problem/Justification
Tailscale interface is not selectable under NFS bind interfaces. I understand the idea is to allow only static IPs, but the Tailscale interface is a static IP, just not controlled via TrueNAS.
Impact
Allow access to NFS via Tailscale only, providing transport encryption and easier access control than setting up Kerberos in small (single user/home network) environment.
User Story
If the Tailscale interface was available to bind, then I would just bind NFS to Tailscale, and go ahead and mount over Tailscale with less strict NFS security options consistent with what is straightforward in a small environment (i.e. without AD/KDC).